A construction structure for pipes penetrating existing well walls

Abstract

This utility model relates to the technical field of pipeline penetration through manhole walls, and more particularly to a construction structure for pipelines penetrating existing manhole walls. The technical solution includes a sleeve applied to and penetrating the manhole wall, with original reinforcing steel bars inside the manhole wall. It also includes multiple L-shaped reinforcing steel bars fixedly installed on both sides of the sleeve, with the other end of each L-shaped steel bar fixedly connected to the original reinforcing steel bars. A collar is fixedly installed on the sleeve. C-type non-shrink grout is filled between the manhole wall and the sleeve. A pipeline is fixedly installed inside the sleeve, and fine aggregate concrete is filled between the pipeline and the sleeve. This utility model solves the problem of constructing new pipelines through existing manhole walls, possessing high practicality and economic value. The structure is practical and easy to operate, effectively ensuring the sealing and impermeability of the pipeline penetrating the existing manhole wall.

Description

Technical Field

[0001] This utility model relates to the field of pipeline penetration well wall structure technology, and in particular to a construction structure for pipeline penetration through existing well walls. Background Technology

[0002] With the acceleration of urbanization in my country, urban renewal has become an important issue in contemporary society. Against this backdrop, municipal engineering, especially the renovation of pipelines for water, electricity, and gas supply, is an indispensable part of urban renewal projects. Pipeline engineering not only faces challenges such as narrow construction sites and complex surrounding environments, but also needs to cope with increasingly complex geological conditions and high-risk construction environments. Furthermore, pipelines must cross existing buildings and structures. For example, in urban water supply projects, the increase in urban population often leads to insufficient water supply capacity, thus requiring the construction of new water supply pipelines to existing water plants to ensure the city's water supply capacity.

[0003] The connection between newly constructed pipelines and existing pump tank walls becomes an unavoidable construction issue. Existing methods for pipe penetration through manholes are all designed for new pipelines and new pump tank walls, using pre-drilled holes during the pump tank wall pouring process. This method is no longer suitable for connecting new pipelines to existing manhole walls in urban renewal projects. Therefore, there is an urgent need to develop a practical and easy-to-operate method for pipe penetration through existing manhole walls to facilitate urban renewal projects. Utility Model Content

[0004] The purpose of this utility model is to address the problems existing in the background technology by proposing a construction structure for pipelines penetrating existing well walls that can effectively solve the problem of newly constructed pipelines penetrating existing well walls, and has high practicality and economic value.

[0005] The technical solution of this utility model: a construction structure for a pipe penetrating an existing well wall, including a sleeve applied to and penetrating the well wall, with original reinforcing steel bars inside the well wall, and further including: Multiple L-shaped steel bars are fixedly installed on both sides of the sleeve, and the other end of the L-shaped steel bars is fixedly connected to the original steel bars. A collar is fixedly installed on the sleeve. The well wall and the casing are filled with grout, a pipe is fixedly installed inside the casing, and the space between the pipe and the casing is filled with concrete. The well wall is equipped with two template structures on both sides to seal and grout the well wall. The template structure includes a grouting ring, a grouting port on the grouting ring, a drive component to drive the grouting ring to rotate, and a limiting component to limit the rotation direction of the grouting component. Optionally, the template structure includes a support frame that contacts the ground, a sealing plate that is fixedly installed on the support frame, and a support ring that is fixedly installed on the sealing plate through a connecting frame.

[0006] Optionally, both the outer ring of the support ring and the inner ring of the sealing disc are provided with sliding grooves, and an installation gap is provided between the two sliding grooves. The grouting ring is located inside the installation gap and is rotatably connected to the sliding groove.

[0007] Optionally, the drive assembly includes a gear ring fixedly mounted on the grouting ring, a gear rotatably mounted on the support frame and meshing with the gear ring, and a drive shaft fixedly mounted on the gear.

[0008] Optionally, the limiting component includes a ratchet fixedly mounted on a support frame and a connecting disc rotatably mounted on a drive shaft, with a pawl rotatably mounted on the connecting disc.

[0009] Optionally, a torsion spring is installed at the rotatable connection between the pawl and the connecting disc, and a limiting block is installed on the connecting disc to limit the movement of the pawl.

[0010] Optionally, the ratchet and pawl in the two limiting assemblies are installed in opposite directions, and the two grouting rings rotate in opposite directions.

[0011] In summary, this application includes at least one of the following beneficial technical effects: This structure can effectively solve the problem of new pipelines penetrating existing well walls. It has high practicality and economic value. The structure is practical and easy to operate, and can effectively ensure the sealing and impermeability of pipelines penetrating existing well walls. Attached Figure Description

[0012] Figure 1 This is a schematic diagram showing the location of the template structure; Figure 2 A schematic diagram of a pipeline penetrating an existing well wall structure; Figure 3 This is a schematic diagram of the template structure; Figure 4 This is an exploded view of the template structure; Figure 5 for Figure 3 A magnified view of a portion of point A in the middle.

[0013] Reference numerals in the attached drawings: 1. Well wall; 101. Original reinforcing steel; 2. Casing; 201. L-shaped reinforcing steel; 202. Cuff; 203. Grouting material; 204. Pipeline; 205. Concrete; 3. Formwork structure; 301. Support frame; 302. Sealing plate; 303. Connecting frame; 304. Support ring; 305. Slide groove; 306. Installation gap; 307. Grouting ring; 308. Grouting port; 309. Toothed ring; 310. Gear; 311. Drive shaft; 312. Ratchet; 313. Pawl. Detailed Implementation

[0014] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0015] Example like Figures 1 to 2 As shown, the present invention proposes a construction structure for a pipe to penetrate an existing well wall, including a sleeve 2 applied to and penetrating the well wall 1. The sleeve 2 is a steel sleeve with a wall thickness of Q355B. The well wall 1 is provided with original reinforcing bars 101. It also includes multiple L-shaped reinforcing bars 201 fixedly installed on both sides of the sleeve 2. The L-shaped reinforcing bars 201 are welded to the original reinforcing bars 101 and the sleeve 2. The welding length on one side is 10 times the diameter of the L-shaped reinforcing bars 201, and the welding length on both sides is 5 times the diameter of the L-shaped reinforcing bars 201.

[0016] A collar 202 is fixedly installed on the casing 2. The collar 202 is fitted over the outside of the steel casing 2 to tighten the steel casing 2 and ensure the stability of the steel casing 2 and the original pipeline. Furthermore, C50 non-shrink grout 203 is added for grouting to fill the gap between the interface of the original well wall 1 and the steel casing 2, ensuring a safe and stable connection between the casing 2 and the original well wall 1. A pipeline 204 is fixedly installed inside the casing 2. The casing 2 and the newly built pipeline 204 are fitted together. Fine stone concrete 205 is used to seal the gap between the casing 2 and the newly built pipeline 204.

[0017] like Figures 3 to 5 As shown, in this embodiment, two template structures 3 are installed on both sides of the well wall 1 to seal and grout both sides of the well wall 1. The template structure 3 includes a grouting ring 307, a grouting port 308 provided on the grouting ring 307, a driving component for driving the grouting ring 307 to rotate, and a limiting component for limiting the rotation direction of the grouting component. When grouting and filling the well wall 1, it is necessary to seal both sides of the well wall opening, which can be achieved through the template structure.

[0018] It should be noted that starting grouting from the bottom effectively vents air, allowing the grout to fill from bottom to top, naturally expelling air bubbles and voids, and improving density. Furthermore, the gradual rise of the grout prevents premature hardening of the top grout, which could lead to insufficient filling below. However, this requires overcoming the weight of the grout and frictional resistance, placing higher demands on the equipment pressure. Precise control of the grouting speed and pressure is essential to prevent grout backflow or pipe blockage.

[0019] When grouting starts from the top, the grout flows down naturally, and the equipment pressure requirement is low. However, air may be trapped at the bottom, forming voids and reducing the overall strength. The grout may preferentially fill large pores, resulting in small gaps not being filled.

[0020] Therefore, the bottom-start grouting method can effectively improve the strength of this structure, but it has high requirements for equipment. By grouting the grouting port 308 and making the grouting port 308 gradually rotate with the grouting ring 307, the grouting port 308 can be gradually raised, thereby realizing grouting from the bottom and avoiding the problem of air being trapped at the bottom.

[0021] The template structure 3 includes a support frame 301 that contacts the ground. A sealing plate 302 is fixedly installed on the support frame 301. A support ring 304 is fixedly installed on the sealing plate 302 through a connecting frame 303. The outer ring of the support ring 304 and the inner ring of the sealing plate 302 are both provided with a sliding groove 305. An installation gap 306 is provided between the two sliding grooves 305. A grouting ring 307 is located inside the installation gap 306 and is rotatably connected to the sliding groove 305. The sealing plate 302, the support ring 304 and the grouting ring 307 can jointly seal the opening of the well wall 1, which facilitates grouting operations and allows the grouting ring 307 to rotate.

[0022] Furthermore, the drive assembly includes a gear ring 309 fixedly mounted on the grouting ring 307, a gear 310 rotatably mounted on the support frame 301 and meshing with the gear ring 309, and a drive shaft 311 fixedly mounted on the gear 310. By rotating the drive shaft 311, the gear 310 can be driven to rotate, thereby causing the gear ring 309 to rotate, which in turn drives the grouting ring 307 and the grouting port 308 to rotate synchronously.

[0023] Furthermore, the limiting component includes a ratchet 312 fixedly mounted on the support frame 301, a connecting plate rotatably mounted on the drive shaft 311, a pawl 313 rotatably mounted on the connecting plate, a torsion spring installed at the rotatable connection between the pawl 313 and the connecting plate, and a limiting block installed on the connecting plate to limit the pawl 313. During grouting, since the middle of the well wall 1 is separated by the casing 2, the positions of the grouting ports 308 on both sides need to be opposite, and the rotation directions of the grouting rings 307 on both sides should be opposite. This allows the two sides of the casing 2 to be grouted synchronously. When the drive shaft 311 rotates, it will drive the pawl 313 to rotate. Through the unidirectional rotational cooperation between the pawl 313 and the ratchet 312, the rotation direction of the drive shaft 311 can be prevented from being incorrect, thus avoiding the incorrect rotation direction of the grouting port 308 during grouting.

[0024] It is worth noting that the ratchet 312 and pawl 313 in the two limiting components are installed in opposite directions, and the two grouting rings 307 rotate in opposite directions, which can ensure that the two grouting ports 308 rotate in opposite directions.

[0025] In this embodiment, the collar 202 is fitted over the outside of the steel casing 2 to tighten the steel casing 2, ensuring the stability of the steel casing 2 and the original pipeline. New C50 non-shrink grout is added for grouting to fill the gap between the interface of the original well wall 1 and the steel casing 2, ensuring a safe and stable connection between the casing 2 and the original well wall 1. The casing 2 is then fitted over the newly built pipeline 204, and fine stone concrete is used to seal the gap between the casing 2 and the newly built pipeline 204.

[0026] By grouting the grouting port 308 and gradually rotating the grouting port 308 with the grouting ring 307, the grouting port 308 can be gradually raised, thereby achieving grouting from the bottom and avoiding the problem of air being trapped at the bottom.

[0027] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A construction structure for a pipe penetrating an existing well wall, comprising a sleeve (2) applied to and penetrating the well wall (1), wherein the well wall (1) contains original reinforcing bars (101), characterized in that, Also includes: Multiple L-shaped steel bars (201) are fixedly installed on both sides of the sleeve (2), and the other end of the L-shaped steel bars (201) is fixedly connected to the original steel bar (101). A collar (202) is fixedly installed on the sleeve (2). Grouting material (203) is filled between the well wall (1) and the casing (2), and a pipe (204) is fixedly installed inside the casing (2). Concrete (205) is filled between the pipe (204) and the casing (2). The well wall (1) is equipped with two template structures (3) on both sides to seal and grout the well wall (1). The template structure (3) includes a grouting ring (307), a grouting port (308) on the grouting ring (307), a driving component for driving the grouting ring (307) to rotate, and a limiting component for limiting the rotation direction of the grouting component.

2. The construction structure for a pipeline penetrating an existing well wall according to claim 1, characterized in that, The template structure (3) includes a support frame (301) in contact with the ground, a sealing plate (302) is fixedly installed on the support frame (301), and a support ring (304) is fixedly installed on the sealing plate (302) through a connecting frame (303).

3. The construction structure for a pipeline penetrating an existing well wall according to claim 2, characterized in that, The outer ring of the support ring (304) and the inner ring of the sealing disc (302) are both provided with grooves (305), and an installation gap (306) is provided between the two grooves (305). The grouting ring (307) is located inside the installation gap (306) and is rotatably connected to the groove (305).

4. The construction structure for a pipeline penetrating an existing well wall according to claim 3, characterized in that, The drive assembly includes a gear ring (309) fixedly mounted on the grouting ring (307), and a gear (310) rotatably mounted on the support frame (301) and meshing with the gear ring (309). A drive shaft (311) is fixedly mounted on the gear (310).

5. The construction structure for a pipeline penetrating an existing well wall according to claim 4, characterized in that, The limiting component includes a ratchet (312) fixedly mounted on a support frame (301) and a connecting disc rotatably mounted on a drive shaft (311), with a pawl (313) rotatably mounted on the connecting disc.

6. The construction structure for a pipeline penetrating an existing well wall according to claim 5, characterized in that, A torsion spring is installed at the rotatable connection between the pawl (313) and the connecting disc, and a limiting block is installed on the connecting disc to limit the pawl (313).

7. The construction structure for a pipeline penetrating an existing well wall according to claim 6, characterized in that, The ratchet (312) and pawl (313) in the two limiting assemblies are installed in opposite directions, and the two grouting rings (307) rotate in opposite directions.

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